| retinoblastoma | term type: main entry term reliability code: 10 part of speech: noun number: singular definition: rare eye cancer arising from the retina that most often occurs in children under the age of 5. It occurs in hereditary and nonhereditary (sporadic) forms. When it is hereditary, the disease normally occurs in both eyes and there is a risk of developing a secondary cancer, particularly osteosarcoma. Symtoms are not easily detectable since children are not likely to complain about visual problems, and may include the development of a squint or the appearance of a white area in the center of the pupil. Procedures used in the diagnosis of retinoblastoma are examination by ophthalmoscopy, fluorescent angiography, CT scan, ultrasound, and core needle biopsy. Retinoblastoma is highly curable if treated early enough. Treatments that may be used in this type of eye cancer include radiation therapy, cryosurgery, chemotherapy and photocoagulation. (en) |
| retinoblastoma | term type: main entry term reliability code: 10 part of speech: noun number: singular gender: masculine definition: cáncer ocular maligno poco frecuente que se origina en la retina y que normalmente se presenta en niños menores de 5 años. En su variante hereditaria suele afectar a ambos ojos y hay riesgo de metástasis en forma de osteosarcoma. Como los niños no suelen quejarse por problemas visuales, es difícil detectar síntomas, a no ser la aparición de estrabismo o un cerco blanco en el centro de la pupila. La enfermedad se diagnostica mediante exploración con un oftalmoscopio, angiografía fluorescente, TAC, ecografía, gammagrafía y biopsia por aspiración. Este cáncer tiene buen pronóstico si se trata en una etapa temprana. Se trata con radioterapia, criocirugía, quimioterapia y fotocoagulación. (es) |